Device for driving the rotor of turbine engine auxiliary
AssigneeSmecma
InventorsGuy Frank Paul Dusserre-Telmon, Jean Pierre Galivel, Zoltan Zsiga
Life of this patent
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Abstract
A device for driving the rotor of an auxiliary is mounted on a turbine engine auxiliaries support which includes a pinion for driving the rotor shaft. The device includes a tubular shaft driven by the pinion and supported by a first bearing (18) and a second bearing (19) which are secured to the auxiliaries support (10). The rotor shaft is coaxial with the tubular shaft and a splined coupling portion formed between the rotor shaft and the tubular shaft. By virtue of the invention, mechanical loads of the auxiliary are transmitted to a lesser extent to the rotor shaft support bearings and to the auxiliaries support gear train.
Claims12
A device for driving the rotor of an auxiliary mounted on a turbine engine auxiliaries support comprising:
- a rotor shaft connected to the auxiliary at a first end of the rotor shaft;
- a pinion which drives the rotor shaft;
- a tubular shaft driven by the pinion;
- a first bearing which is secured to the auxiliaries support and supports the tubular shaft at a first end of the tubular shaft;
- a second bearing which is secured to the auxiliaries support and supports the tubular shaft at a second end of the tubular shaft;
- and
- at least one third bearing which is secured to the auxiliaries support and supports the rotor shaft,
- wherein the rotor shaft is disposed inside of and coaxial with the tubular shaft and a rotational-coupling device is formed between the rotor shaft and the tubular shaft at a second end of the rotor shaft and the first end of the tubular shaft, and
- wherein a middle portion of the rotor shaft between the first end and the second end of the rotor shaft is directly supported by the at least one third bearing.
Dependencies are inferred from the claim text.